Work clamp and template holder for hinge-seat cutting



Sept. 9, 1947. w, B, ZERN 2,427,081-

WORK CLAMP AND TEMPLATE HOLDER FOR HINGE-SEAT CUTTING FiledJuly 12, 19 7sheets-sheet l INVENTOR. Warren .3. Zern ATI'U RN EYE p 9, 1947. w. B.ZERN 2,427,081

WORK CLAMP AND TEMPLATE HOLDERFOR HINGE-SEAT CUTTING Filed July 12, 19447 Sheets-Sheet 2 I INVENTOR. 5' Warren .B.Zerrz BY azj /pmr pt.9,194 w.B. ZERN 1 2,427,081

WORK QLAMP AND TEMPLATE HOLDER FOR HINGE-SEAT CUTTING Filed July 12,1944' 7 Sheets-Sheet s Warren .3. Zeriz ATTORNEYS Sept. 9, 1947.

w. B. ZERN WORK CLAMP AND TEMPLATE HOLDER FOR HINGE-SEAT CUTTING FiledJuly 12, '1944 7 Sheets-Shet 4 INVENTOR.

M Z m A'ITD R N EYS B. ZERN Y 2,427,081

SEAT CUTTING I Sept. 9, 1947.

WORK CLAMP'AND TEMPLATE HOLDER FOR HINGE- Filed July 12 1944 7Sheets-Sheet 5 IN VEN TOR.

'Sept. 9, 1947. w, ZERN 2,427,081

WORK CLAMP AND TEMPLATE HOLDER FOR HINGE-SEAT CUTTING Filed July 12,1944 7 Sheeizs-Shet 6 m wa zmkz AITD RN EYS Sept. 9, 1947. a w. B. ZERN2,427,081

WORK CLAMP AND TEMPLATE HOLDER FOR HINGE-SEAT CUTTING Filed July 12,12344 7 Sheets- Sheet 7 Warrn B. Zmz

Patented Sept. 9, 1947 UNITED STATES PATENT OFFICIE.

WORK QLAMP AND TEMPLATE HOLDER FOR IlINGEr-SEAT CUTTING 8 Claims.

to wood working apfor one of its several precision in the location andformation of gains and mortises therein, for ease in the application ofhinges and locks, and the quick installation of the doors and theircasings and styles, upon delivery on a job.

A further object of the invention lies in the provision of a combinedwork clamp and template holder of the kind specified, which has theadvantage of securely retaining a door and a companion casing .part orstyle accurately aligned for the simultaneous gaining of the same toreceive the hinges by which the door is to be hung from the style, and,likewise, for mortising of the door and the opposite casing part orstyle for the reception of a lock and its keeper or striker.

Another object of the invention is to provide the combined fixture andjig with gage means to facilitate the positioning of the same relativelyto predetermined or specified locations for the installation of hingesand locks on doors and their companion casing parts or styles, and othergage means for determining proper clearance allowances between the doorsand the casing parts and styles.

With these and other objects and advantages in view, the inventionresides in the certain new and useful combination, construction, andarrangement of parts, as will be hereinafter more fully described, setforth in the appended claims, and illustrated in the accompanyingdrawings, in which:

Figure 1 is a top plan view of the combined fixture and jig structure ina set position relatively to a door and a companion casing part orstyle, in accordance with the invention;

Figure 2 is a side elevation thereof;

Figure 3 is a perspective view of one of the adjustable door clampingelements; 1

Figure 4 is a front elevation;

Figure 5 is a vertical section, taken through the line 5-43 on Figure 1;

1 through the line Figure 6 is a perspective view of the door clampingfixture upon which the jig structure is mounted;

Figure 7 is an enlarged fragmentary sectional detail;

Figure 8 is a perspective view of a slightly modified baseplate of thejig structure, looking toward its lower side;

Figure 9 is a fragmentary perspective View, showing the baseplate ofFigure 8 in its secured relation with a slightly modified form of doorclamping fixture;

Figure 10 is a fragmentary sectional detail;

Figure 11 is a perspective view of the modified form of the doorclamping fixture per se;

Figure 12 is a fragmentary top plan view of the fixture and jigstructure, and showing its modification for'the addition thereto of agage means for accurately locating the ,same, relatively to the top andbottom edgesof thedoor and its companion casing part or style, for theformation of complemental hinge receiving gains therein;

Figure 13 is a perspective view of the gage element for locating thefixture and jig structure relatively to the top end edges of the doorand its companion casing part or style;

Figure'l4 is a cross section, taken through the line I4 l4 on Figure 13;

Figure 15 is a perspective view of an end of the door clamping fixture,modified for the mounting of the gage means thereon;

Figure 16 is a sectional detail, partly in elevation, taken through theline |6-I6 on Figure 12;

Figure 17 is a horizontal section, taken through the line 11-11 onFigure 16;

Figure 18 is a front elevation of the modified fixture and jigstructure, showing the gage means mounted thereon;

Figure 19 is a vertical transverse section, taken through the line 3-4 9on Figure 12;

Figure 20 is an enlarged sectional detail, taken through the line 20-20on Figure 19;

Figure 21 is another sectional detail, taken through the line 21-2! onFigure 19;

Figure 22 is yet another sectional detail, taken through the line 2222on Figure 19;

Figure 23 is still another sectional detail, taken 23-23 on Figure 19;

Figure 24 is a perspective view of one end of the adjustable member forlevelling the casing part or style with the uppermost edge of the door;7 1 Figure 25 is a clamping fixture perspective view ofthe door and theattached gage means,

of a modified form of the looking from the rear, the jig structure beingremoved;

Figure 26 is a view similar to that of Figure 25, but looking from thefront;

Figure 27 is a fragmentary bottom plan view of the template carriedframe of the jig structure, showing the adjustable securing meanstherefor;

Figure 28 is a fragmentary bottom view of the base-plate of the jigstructure, showing one of the means for adjusting the memberforlevelling the casing part or style relatively to the juxtapositionededge of the door;

Figure 29 is an inverted sectionaldetail, taken through the line 29-29on Figure 28;

Figure 30 is a top plan view of a further modified form of the fixtureand jig structure;

Figure 31 is a perspective view of a spacer bar for gaging a hingingclearance between 'a casing part or style and the opposed side of thedoor;

Figure 32 is a vertical longitudinal section, taken through the line3232 on Figure 30;

Figure 33 is an enlarged fragmentary sectional detail, taken through theline 33-33 on Figure 30;

Figure 34 is a perspective view of the casing part or style levellingmember, per se;

Figure 35 (Sheet No. is a reduced topv plan view of the fixture and jigstructure operatively related to a door and itsv companion casing partor style, and showing the securement of a' butt ,hinge in thecomplemen'tal gains, after their formation, the hinge being emplacedtherein by insertion through the gain gaging opening in the templatecarried by the jig,

Figure 36 (Sheet No. 3) is a perspective view of one form of templateblank:

Figure 37 is a View similartothat of Figure 36,

but showing the blank: modified to completed form for, guiding aroutingtool in the formation of a lock mortise;

Figure 38is another similar view, but showing a, co'mplemental templatefor use in the'formation of a gain or mortise for the'lockkeeper orstriker;

Figure 39v (Sheet No. 6 is a p erspecti ve view of the" template holderper se Figure 40 (Sheet No. 4) is a perspective view template holder.'Referring' to the drawings, wherei'nllike characters of referencedenote'co'rresponding parts throughout, the severalviews, the embodimentof the invention, as it is exemplified] therein, is generally comprisedin a work clamp'fixture and a jig carried template, assembledintoasubstantially unitary structure,"somewhat-,in the manner of the likestructuradescribed' and illustrated in my copending applicationi'forLetters iPatent of 'the United States, entitled Wood working. ap-

paratus, filed on the 29th dayof. May, 1942, Serial No. 445,049, issuedAug. 8, 1944, as Patent No. 2,355,603, of which the present applicationis a continuation in part. In the present instance, however, ,thefixtureandjig assembly is applied directly to the work, i. e., complementalstructural units, such as ,a door and its. companion casing parts orsty1es,,apart from .any particular or special type of supporting standorguidestructure.

As shown inFigures 1 through 8, the fixture is comprised inan'elongatedangular frame, formed of a horizontal bar I00, havingrelatively short vertical bars I02 rising from its ends, and horizontalarms I04 extending at right angles from the top ends of the verticalbars 402. Asbest shown in Figurefi, the lower ends of thevertical of thevertical bars I02 bars I92 are here secured, as by screws IOI, to oneside of the ends of the horizontal bar I09, and the inner ends of thearms I94, to the top ends of the vertical bars, as by screws I03. Eachof the arms IM is longitudinally slotted, as at I85, to receive upwardlythrough the same a threaded stud I01, projecting from the center of thetop edge of a substantially rectangular clamp. element- 106. A nut. I08isengaged on the stud I01, to fsecurethe clamp element I06 in adjustedparallel relation to the complemental and in clamping relation to theopposed side of a door A, when the fixture is seated over a side edge ofthe door.

Extending rearwardly from the inner side of the fixture, is ahorizontally disposed base-plate I edge resting upon the top edge of thehorizontal bar I00 of the fixture.

A parallel bar H9 is secured, as by screws III, to the under side of thebase-plate I89, and is ahutted against the inner side of the horizontalbar I00, it being connected to the latter for lateral adjustment bymeans of a bolt I I2, engaged through a longitudinal slot ll3,formedcentrally in the horizontal bar I90. This parallel bar I I0 is braced atits inner side, by a pair of, angled brace elements H4, secured, as byscrews I I5, to the under side of the base-plate I99; one spaced from anadjacent end of a transversely elongated opening H6 or IIBa (Figures I 5and 8through 10), in the latter. Rising from the rear end edge of thebase-plate W9, is a flange between thearms I04, to a point beyond theouter side of the door A, upon the uppermost side edge of which itrests, when operatively disposed and thefixture has been clamped inplace thereon; the door edge being firmly held against the outer facesof the vertical bars I02 by the clamp elements I09; the opening in thecarrier frame I2I also extending beyond the outer side of the door.Depending from the front end edge of the carrier frame I2 I ,is a flangeI22 which supports a clamp bar I23 at its inner side for engagement withthe outer side of the door, the clamp bar being detachably mounted onthe flange by means of a pair of spaced thumb screws I24, the headeddisposed. flush with the front end edge of the carrier frame.

The template is provided with an opening I21, conforming in size andshape to anopenhinge, such as is commonly used for the hanging of doors,through which a cutting tool,, such as a power driven routing tool (notshown) is inserted and guided in the performance of its work. For thispurpose, the template I26 is positioned so that a proper area of theopening I 21 exposes through the samea predetermined area of the'topedge of the door A for the forming of again to receive acomplementalleaf of the hinge;

In order to similarly recess a companion casing part or style B, thesame is laid lengthwise across the base-plate I09, beneath the carrierframe I2 I, in abutted relation to the inner faces of the vertical barsI02, of the fixture, in which position, it is firmly held by means of aclamp or pressure bar I28, which is forcibly engaged with its inner sideedge by a screw I29, that is threaded forwardly of and centrally throughthe upstanding flange I II, at the rear end of the base-plate I99; thethickness of the vertical bars I02, of the fixture, providing a properhinging clearance between the casing part or style B and the opposedside of the door A. The rearwardly directed end of the screw I29 isprovided with an operating handle I30, while its forwardly directed endhas bearing in a recess I3I, formed in the outer face of a wear plateI32, that is secured, as by screws I33, to the rear side edge of theclamp or pressure bar I28. Secured, as by screws I34, on the inner sideof each of the brace elements I I4, is an elevator element I35, which isvertically slotted, as at I34 (Figure 2) for adjustment on the screwsI34 and inwardly of and adjacent to the ends of the opening I I6 tosupport the style B with its upper surface flush with the top side edgeof the door A. These elevator elements I35 are connected together forsimultaneous adjustment by a cross bar I35?) and are displaced frombeneath the style, whenever a style of a greater thickness, than that ofthe one shown, is to be employed. Thus, with the template I26 positionedon the carrier frame I2I as before stated, its opening I21 will overliecomplemental areas of the door edge and the style for the simultaneousrouting out of gains for both of the leaves of a hinge.

In Figures 8 through 11, a modified form of fixture is illustrated and,here, the horizontal bar Ia is made integral with the vertical barsI02a, to the top ends of which, the arms I04a are secured, by the screwsI 03a. The arms I0 la have the slots I05a to receive the studs I0Ia ofthe clamp elements I06a; the studs having nuts IBM to secure the latteragainst the outer side of the door A. In this instance, the base-plateI091; has its forward end edge secured, as by screws I36a, to the topedge of the horizontal bar Ill0a, with the angled brace elements I I labearing directly against the inner side of the latter, as shown inFigure 10; Also, the base-plate I09a is provided with the elevatorelements I35a for leveling the style B with the top edge of the door. Inthis form of the fixture and jig, the template I26, on the carrier frameI 2|, is employed as, or replaced with, a template holder I26a, such asis shown in Figure 39, (Sheet No. 6), which serves to retain a pair ofcomplemental templates I261) and I260, such as are illustrated inFigures 37 and 38 (Sheet No, 3), for the mortising of the door and stylesimultaneously for the reception of a lock and its keeper or striker,respectively.

In the use of either of these forms of fixtures and jigs, one or theother of the fixtures will be engaged over the upper edge of the door,with the door supported from the floor in sidewise upright position byany suitable means, and the clamp elements I06 adjusted in the slots I05to firmly abut the outer side of the door. With the fixture thusemplaced, the carrier frame I2I is raised on its hinge connectionssufiiciently for the laying of the style 13 across the base-plate I09,or upon the levelin elements I35, as the case may be, injuxtaposition'to the door and in abutting relation with the inner sidesof the vertical bars I02, of the fixture frame, which bars I02preferably have a thickness to space the style from the adjacent side ofthe door, at a distance to provide a proper clearance therebetween, whenthe door and style are installed. Following this, the carrier frame I2Iis lowered onto the top surfaces of the door and style and the clamp barI23, carried by the flange I22, is tightened against the outer side ofthe door by a manipulation of the thumb screws I24. The screw I29 willnow be turned from the handle I30 to tighten the pressure bar I28against the inner side edge of the style. With the parts in this state,a routing tool applied through the opening I21, in the template I26,will accurately form the gains for the seating of a hinge therein, uponthe removal of the fixture and jig from the work. As before stated, bysubstituting the complemental templates of Figures 37, 38, for thetemplate I26, the mortises for the reception of a lock and its keeper orstriker (not shown) can, by the use of the routing tool, be readily andaccurately formed in the opposite side edge of the door and a stylecomplemental thereto, it being understood that door will be reversedfrom its initial sidewise upright position for the purpose.

In substituting the template holder I26a (Figure 39) for the templateI26, separate templates I261) (Figure 37) and I26c (Figure 38) areemployed; the template I26b for the formation of a mortise for a lockand the template I26c for its keeper or striker, and these arejuxtapositioned within the opening in the template holder in properrelation to overlie the edge of the door and the top surface of thestyle, respectively. The tool guide openings in the templates arepreferably formed off center, with respect to the longitudinal edgesthereof, so that one side portion a of each is wider than the oppositeside portion 2). By this arrangement, the templates may be positionedwith the opening of the template holder in a reversed order,correspondingly for use with doors of the two standard thicknesses, sothat the mortises will be formed in their proper relative positions. Toprevent any tendency of the templates I261), I26c, to buckle, duringtool operation, the opposed edges thereof are tongued and grooved, as atc and 0, respectively.

Referring now to Figures 12 through 29, a modified form of fixture andjig is provided, wherein a door A" and a companion style B may bepre-fabricated, i. e., gained and hinged together, prior to the removalof the fixture and jig from each set position; each hinge being insertedinwardly through the template opening, as in Figure 35 (Sheet No. 5),and secured in a usual manner within the complemental gains to that endand the fixture made with an angled door clamping part that isdetachable from an end of the horizontal bar I 00b to permit of itsdisengagement from about a hinge for its removal from the work.

In this instance, the horizontal bar [0012' has one of its endsdetachably engaged within the opposed channels of a pair of oppositelyangled lugs I31 (Figure 20), formed on the inner side of one of thevertical bars 1%, each of which has its upper end provided with theangled arm l04b, that is slotted, as at N52), to receive the stud IIIIbof the clamp element I061), the stud having a nut IIJBb to secure theclamp element against the outer side of the door A, as in the firstinstance, except that the clamp bar I23 is omitted. The clamp elementI061) maybe em'- ployed alone, when the fixture ismounted one. door ofthe greaterthickness,-andwith a-supplemental clamp element I060;when-the fixture is mounted on a door of the lesser-thickness, thelatter element being secured against the' inne'r side of the elementIIlIib by means of a screw I38 extending through the same andprojectingoutwardly through an aperturein the-element I061), to receivea winged clamp nut I39 Formed on the under side of each of thearms-104b, parallel to the slot I051), is a series of indentationsI IIl(Figure 15), which are engaged by a lug I lI on the top side of theclamp elementIIlIib' (Figure 3), at anyposition ofadjustmentof'the-latter, to hold the same and the supplemental element I860, whenemployed, from turning onthe-stud IIl'Ib, during the tightening up ofthe nut 108D.

Thevertical bar I02b,-of thedetachable angled part of the fixture, isapertured to receive-a clamp screw I42, extending between-the lugs I31,for engagement'with a slot I44,'-opening through the end of thehorizontal bar IIIIlb (Figure 26), the screw having-a winged -nut I43threaded on its inner end" to secure the angled part in place. Theopposite end ofthe horizontal bar Iflflb is secured, as by the screws-2I3, to'the inner side of the other of the vertical bars I021), whichis made wider than in the first-instance, to provide an outwardly offsetportion that has a notch I46 in its top edge, immediately adjacent thearm I041), to seat a gage bar I41 (Figure 13) which is pivoted, as atI48 (Figure 18), to the outer side of the arm H141) and normallyextendsrearwardly through the notch I46-and crosswise of the top ends of thedoor A and the style B. The free end of the gage bar I41, beyond thepoint of its seating in the notch I46, is cutaway at its inner side, asat I49, to a depth-equal toa maximum width of clearance to be allowedbetween the top edge of the door and-the header of the casing in'whichthe door is to be hung. Thus, when seated in the notch I46, the innerside of the thicker part of the gage bar- I41 is abutted by the top edgeof the door, while the top edge of the style abuts the parallel face ofthe cutaway portion I49. In order to vary the width of the clearanceallowance,=arradjustable gage is mounted transversely of the outerreduced or cutaway portion I49 and is comprised in 'a screw I50, havinga circular foot-piece I5I to'be abutted against the opposed edge of thestyle,-when the screw is turned in proper direction for the purpose,- akerfed head I52 (Figure 26) 'being provided on the opposite or outer endof the screw for its manipulation by hand or too 1Q If the maximumclearance isnecessary of allowance, the foot-piece I5I seats within arecess I53, formed in the face of the cutaway portion I49, when thescrew I56 is turned in a reversed direction.

In connection with the location of hinges on a door, it is to be herenoted that,-;inmodern architectural practice, the upper hinge is--required to be mounted inwardly of the plane of the inner edge of thetop cross rail of the door, and the lower hinge inwardly of the plane ofthe inner edge of the bottom cross rail thereoi,-the latter usuallybeing substantially wider than the former. For locating the hinge gainsto receive the lower hinge, therefore, a second gage isprovided and,here, the fixed vertical bar IIJZb, below the notch I46 therein, isapertured, as at I54 (Figure 18), to receive a clamp screw'I55 (Figure21), for the securement'thereto of an elon' gated bar I 56, --whichextends in- I linewith the horizontalbar' IIlIllk- This lea-r156 isformed to provide a pair of aligned slots "I'5l-,'-I'58 (Figure 26);extending :-longitudinally thereof; for the adjustable mounti-ng-ofengage-element I59 in one orthe other ofthe slots, the gage'element II59 having a threaded studI'GU and a winged nut Hit-(Figure 22), for itssecurement in a setposition. When the fixture an'd-jig structure isemployed for the formation of-the'gains for a lower hinge, the gage-barI4'I is swung'on itspivot I48, clear-of thenotch I46, to a position toavoid interference with the proper mounting of the fixture and jig onthedoor edge and its adjustment thereon for a givensetting of the gageelement I59, for thelocation of the gain areas to receive the lowerhinge.

As best shown in Figures-23and 29, the baseplate 18% is supportedfrom'the horizontal bar I062 by means of an-inverted U-sh'aped'channelmemberIBZ, depending from the under side of the-front end edgeofthebase-plate and-engaged over the-horizontal bar-I001), between thevertical end bars -I02b.' The channel member i62'is adjustably securedto-the -horizontal bar limb by aclamp bolt IIZb, which is engaged in aslot--II3b that is formed longitudinally and centrally of the latter. Inlieu of the separate levelling elements I35 "for the style B", the samemay be connected together by means of' a bar I351) (Figure 34), theelements I35 (Figures 24 and '29) depending through slots I63 (Figure29'), formedin the base-plate-beyond the opposite ends of 'the'opening lI611. These-levelling elements I35" are disposed at the inner sides ofthe angled-brace 'members I I41), and are -vertically slotted, as atI64, for the engagement therein of screws I'65,'carried 'by thebrace'members andhaving winged nuts (Figure 29) on their outer'ends tosecure the elementsin 'adjusted position.- Thus, with the fixtureengaged on a door anda style laidacross-the base-plate I09b -and'resting upon the bar l35b, the latter can be elevated to liftthe stylefor'the alignment of its top surface with the" top edge of the door,'byan adjustmentof the guide members I35' relatively to the-brace elementsII lb, upon a loosening up'on'the nuts- I65." When levelled, the styleB; (Figures 12 and 19) ,will beclamped in place-bytheforce'appliedon'the pressure bar I28?) by-the screw I29, as before stated herein.

In'order'to adapt "the fixture and jig ior use on doors of two standardthicknesses-i; e.,-' one and three-'eighthsinches and one'and threequarters inches, and as shown inFigure's' 27, pairs of relativelymovable spacer elements are mounted on the inner side of thefiange'IZZ'h-of the-carrier-frame I2I'b, one pair at each'end thereof,andeacltr pair-is comprised in a block or plate I66, that" is carried'ona '=c1amp:screw I6l-,-which is adjustably engaged in a s1otI68 (Figure'18) ,extending longitudinally'in'the flange' I222), the headed end ofthe screw being countersunk flush in theinner face 'of the block-orplate 'andits threaded end'provi'ded with a knurled nut -I69, to be'tightened'aga'inst the outerface of the flange. This block "or plate IE6is normally positioned alongside a"se'condblock 'or plate I10, whenthe-fixture'is arranged 'for use with a door of the lesser thickness.Thisblockor-plate-IIO is also carried on'a clamp screw 'I'I-I,that'passes through a slot I1 2, formed horizontally in the block or plate66'," and 'outwardlyof an aperture in the flange I 22b, the inner headed"end of the screw ITI being countersunk flush" in the inner face of theblock or plate I16 and its outer end provided with a winged nut I13, tobe tightened against the "outer face of the flange I221), when the twoblocks or plates are placed in registry. The slot I12 opens through theouter side edge of each of the blocks or plates I66, so as to allow thelatter to be moved inwardly toward the center of the flange I 22b, fromin front of the blocks or plates I10, to positions substantially asshown in broken lines in Figure 2'1, when the fixture is to be arrangedfor use with a door of the greater thickness, and are thereafter drawninto contact with the inner face of the flange and alongside the blocksor plates I10, by the tightening of the nuts I69. Likewise, upon atightening up of the nuts I13, a clamp bar I is moved toward the clampbar I221) until its medial portion contacts the inner faces of theblocks or plates I66. This clamp bar I15 extends between the blocks orplates I10 and is secured to their inner faces by the screws I14 itbeing adapted to engage the outer side of the door A", when the carrierframe I2") is lowered onto the top surfaces of the door and the style B.When a door of a greater thickness is to be worked, the

blocks or plates I66 will be displaced from in front of the blocks orplates I10, and secured in place between the same, and against the innerside of the flange I221) by a tightening up of the nuts I 69, so that,when the nuts I13 are tightened up on the screws "I, the clamp bar I15will be drawn toward the flange I22b a sufficient distance away from thevertical bars I 02b to provide a space therebetween to receive the door,in which position, the blocks or'plates I10 will align with the blocksor plates I66. Shims I16 are placed between the ends of the clamp barI15 and the blocks or plates I10, in order to facilitate the engagementof the door edge within the space so provided between the vertical barsI021; and the clamp bar I15.

In the form of the fixture and jig, as shown in Figures through 34,which is particularly designed for the mortising of a door and its stylefor the installation of a lock and keeper or striker, the front halfportion of the carrier frame I2 I0 is made wider than the rear halfportion thereof and is formed to provide two parallel, transverselyelongated, openings I13, I19 (Figure 30), separated by a transverse barI85, with the inner opening I19 separated, by a second transverse barI8I, from the opening I 82 in the rear half portion. Detachably mounted,as with screws I83, is a template holder I 26d (Figures 30 and which isformed with a substantially T-shaped opening to receive complementaltemplates I261), I260 (Figures 36 and 37) for the formation of the lockand keeper or striker mortises, respectively. In order to provide aproper door opening and closing clearance between the door and thestyle, a spacer bar I84 is to be interposed therebetween, prior to thetightening up of the pressure bar I280 and it has its lower side edgesbeveled, as at I84, to facilitate its insertion between the door and thestyle. The top side of the bar I84 is provided with spaced pairs ofround headed screws I35 (Figures 30 and 33) which constitute guides thatare cooperative with slots I85, formed in the transverse bar Iililfofthe carrier frame I2Ic. A pair of coil springs I81 extend between theinner side edge of the spacer bar E84 and the inner transverse bar I8I,and these act to withdraw the spacer bar from its contact with the innerside of the door, when the pressure bar I280 is likewise withdrawn fromcontact with the inner side edge of the style, by the operation of thescrew,I29c from the handle I 300. The springs I81 each have one of theirends secured, as by a screw I88, in a recess, formed in the inner topedge of the spacer bar I84 and the other end thereof engaged, as at I89,through an aperture formed in the forward edge of the transverse barI8I.

As shown in Figures 36 and 37 (Sheet No. 3), the invention proposes thatcertain of the templates will be made and sold in the form of blanks, asat I260 (Figure 36') so that a user may elongate an initially formedslotted opening ISO to proper length, or size, as exampled in thetemplate I261) (Figure 37), for the forming of a mortise to receive aparticular length or size of lock.

Having thus fully described my invention, it is to be understood thatany and all changes in design, construction and arrangement of parts, towhich the disclosed fixture and jig structures are susceptible, may beresorted to, without departing from the spirit of the invention, or itsscope as claimed.

What is claimed is:

1. In a device of the class described, a fixture adapted to be seatedover the edge of a first structural unit, a base-plate bracketed fromone side of said fixture, means carried by said fixture for supporting asecond structural unit in juxtaposition to said first structural unit, ajig hingedly mounted on said base-plate and overlying both of saidstructural units, and a template carried by said jig in overlyingrelation to predetermined areas of said structural units to guide arouting tool over and about said areas for the formation of complementalgains or mortises therein.

2. In a device of the class described, a fixture adapted to be seatedover and upon a side edge of a door, a base-plate bracketed horizontallyfrom one side of said fixture to support a style in juxtaposition tosaid door edge, a jig extending horizontally above said base-plate andsupported therefrom at one end and having its other end supported on thetop surfaces of said door edge and said style, and a template mounted onsaid jig in overlying. relation to predetermined areas of said structualunits to guide a routing tool over and about said areas for theformation of complemental gains or mortises therein.

3. The deivce as in claim 2, with clamping means for securing saidfixture in place on said door edge.

4. The device as in claim 2, with a clamp means mounted on saidbase-plate for holding said style in place relatively to said door edge,and other means on said base-plate for supporting said style so that ittop surface lies flush in the plane of the surface of the door edge.

5. The device as in claim 2, with means carried by said fixture andinterposed between opposed portions of said door and said style toprovide a required clearance therebetween.

6. The device as in claim 2, with a gage means extending from one end ofsaid fixture and cooperative with an end edge of said door forpositioning the fixture on the side edge of the door to accurately alignthe template with the areas of the latter and of the style in whichhinge receiving gains are to be formed.

7. The device as in claim 2, with the fixture comprised in a horizontalbar having upstanding angled members adapted to be engaged over a sideedge of a door and adjustable elements car- 11 ried by said angledmembers to clamp the door between the same and said horizontal bar.

8. In a device of the classdescribed, a horizontal bar, upstandingangled members at the ends of said bar adapted to be engaged over a sideedge of a door, adjustable elements carried by said angled members toclamp the door between the same and said horizontal bar, one of saidangled members being detachable from said horizontal bar, an adjustablegage means extending horizontally from the fixed angle member in linewith said horizontal bar, a second gage means pivotally mounted on thefixed angled member and extending horizontally at right angles to saidadjustable gage means and crosswise of said horizontal loar whenoperatively disposed, a baseplate bracketed horizontally from saidhorizontal bar at the side thereof opposite from the angled members tosupport a style in juxtaposition to said door edge, means carried bysaid base-plate for clamping said style relatively to the door edge, ajig mounted on said base-plate and normally disposed to overlie the dooredge and said style,

means carried by said jig adapted to engage the 12 outer side of saiddoor between said angled members, and a template mounted on said jig andoverlying predetermined areas of said door edge and said style to guidea routing tool over and about said areas for the formation ofcomplemental gains or mortises therein.

WARREN B. ZERN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 724,966 Strubel Apr. '7, 19031,016,341 Lowden Feb. 6, 1912 1,524,234 Carter Jan. 2'7, 1925 1,619,695Boese et al. Mar. 1, 1927 1,788,256 Sherwin Jan. 6, 1931 1,769,511Heston et al. July 1, 1930 1,028,584 McKnight June 4, 1912 859,800Britton July 9, 1907 1,022,883 Seguin Apr. 9, 1912

